Many real world problems can be represented as linear equations, and the challenge lies in determining the equations first.  Once the equations have been determined, then you can easily find the solution to the sytem graphically using technology (eg Desmos) or by graphing with pencil and paper and estimating the point of intersection (the solution) for the system.

You will need to be able to determine what the variables will represent, and then create two equations, each relating both variables.


  • Notes
  • Blank Assignment Sheet


  • p440 #1-9 11 13-15 17 19 20
  • Solving a Problem using a System of Equations

Things you should be able to do after today:

  • create a linear system from a word problem
  • explain what the coordinate that is the point of intersection represents in terms of the word problem